Compatibility of ITER candidate materials with static gallium

Technical Report · Fri Sep 01 04:00:00 EDT 1995

DOI:https://doi.org/10.2172/195721· OSTI ID:195721

Luebbers, P R; Chopra, O K ^[1]

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1. Argonne National Lab., IL (United States). Energy Technology Div.

Corrosion tests have been conducted to determine the compatibility of gallium with candidate structural materials for the International Thermonuclear Experimental Reactor (ITER) first wall/blanket systems, e.g., Type 316 stainless steel (SS), Inconel 625, and Nb-5 Mo-1 Zr. The results indicate that Type 316 SS is least resistant to corrosion in static gallium and Nb-5 Mo-1 Zr alloy is most resistant. At 400 C, corrosion rates for Type 316 SS, Inconel 625, and Nb-5 Mo-1 Zr alloy are {approx} 4.0, 0.5, and 0.03 mm/yr, respectively. Iron, nickel, and chromium react rapidly with gallium. Iron shows greater corrosion than nickel at 400 C ({ge} 88 and 18 mm/yr, respectively). The present study indicates that at temperatures up to 400 C, corrosion occurs primarily by dissolution and is accompanied by formation of metal/gallium intermetallic compounds. The growth of intermetallic compounds may control the overall rate of corrosion.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 195721
• Report Number(s): ANL/ET/CP--86690; CONF-950905--22; ON: DE96005525
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHROMIUM
COMPATIBILITY
CORROSION
CORROSION RESISTANCE
CORROSIVE EFFECTS
EXPERIMENTAL DATA
GALLIUM
INCONEL 625
IRON
ITER TOKAMAK
LIQUID METALS
MOLYBDENUM ALLOYS
NIOBIUM BASE ALLOYS
STAINLESS STEEL-316
THERMONUCLEAR REACTOR MATERIALS
ZIRCONIUM ALLOYS